I got my first 35mm SLR in the early 80's.
Everything the beginner could find to read suggested keeping a UV filter on your lens to protect it.
Most even touted that even a cheap filter would be fine.
When I got this Nikon I bought a cheap UV filter for it's lens.
I started to notice frequent lens flare when shooting into the sun.
Chris and I talked so I decided to try an easy experiment.
Below are the results.
With no filter:
With Vivitar UV filter:
So now... Buy a better filter or go naked?